What roles do calcium and Vitamin D play in developing bones

Calcium and Vitamin D play vital roles in bone development. Once the osteoblasts have secreted the collagen to fill in the holes made by the osteoclasts, the collagen is strengthened by lysine (an amino acid) and hardened with calcium, giving bone its hardness and strength. The strengthening of the new collagen takes place over a one- to two-week period.

Most calcium in the body is stored in bone. In fact, bone is 40% calcium. When blood levels of calcium dip below normal, calcium is taken from the bone to restore normal blood levels. The body loses calcium through urine, sweat, and stool, and because it is constantly excreted, you must always take in enough calcium to maintain normal blood levels. Keeping your blood calcium at normal levels prevents the bone from releasing its stores of calcium, thus protecting your bone strength.

Vitamin D is necessary for the absorption of calcium and phosphorus from the intestinal tract. If your body has inadequate Vitamin D, calcium and phosphorus will not be absorbed from your intestines but instead will be taken from your bones, regardless of how much calcium you are taking in. Vitamin D is also important

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Lysine

An amino acid that strengthens collagen in bone formation.

Calcium

A mineral necessary for the body to thrive; bone is made up of 40% calcium. When calcium in the blood is low, it is taken from bone. The body loses calcium through urine, sweat, and stool, and must be replaced through intake of certain foods and

Vitamin D

A type of vitamin that is necessary for the absorption of calcium and phosphorus from the intestinal tract. If your body has inadequate Vitamin D, calcium and phosphorus will not be absorbed from your intestines but instead will be taken from your bones, regardless of how much calcium you are taking in. Vitamin D is transformed into cal-citriol by liver and kidney enzymes, which aids in balancing the activity of the bone-forming cells (osteoblasts) and hole-making cells (osteoclasts).

Calcitriol

A hormone resulting from the conversion of Vitamin D by liver and kidney enzymes to aid in balancing the activity of the osteoclasts and osteoblasts.

Osteomalacia

A disease characterized by a gradual softening and bending of the bones with varying severity of pain; often comes from a Vitamin D deficiency; may also be called "adult rickets."

Vitamin A

Helps to regulate osteoclast and osteoblast activities in bone modeling and remodeling; too much of it disrupts these processes.

Vitamin B6

Indirectly helps with bone development by lowering levels of homocysteine, a body substance associated with fractures due to osteoporosis; high homocys-teine levels may increase the risk of heart disease.

Vitamin C

Important for bone development because of its role in making collagen, which is one of the substances secreted by the osteoblasts to fill in the holes or cavities in bone.

for bone strength because it is transformed into a hormone called calcitriol by liver and kidney enzymes to aid in balancing the activity of the bone-forming cells (osteoblasts) and bone breakdown cells (osteoclasts). If you are severely deficient in Vitamin D, you may develop osteomalacia ("softened" bones), which can result in bone pain, leg deformities, and fractures. So, it is important to consistently get adequate Vitamin D, either from supplements, or foods.

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  • Kimmo
    What role do calcium and vitamin d play in bones?
    17 days ago

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